This project is based on the twice woven rug directions, with modifications.
Dressing the loom:
I beamed the loom F2B. I sleyed 8 threads in a single dent, skipping the next 14 dents in a 10 dent reed, leaving a 1.5" space between warp groups. I added 2 warps on each selvedge instead of 8.
The warp: Green 16/2 unmercerized cotton and 10/2 pearl cotton, alternating, was threaded 3,4,1,1,2,2,3,4 (from Sigrid Piroch's book & one other source). The selvedge warps were threaded 1, 2 and 3, 4.
This plan gave me 9 rows of trees across the 14" warp, and 17 rows of 2" tall trees along the warp length.
I experimented with weft. The general idea was a weft bundle about the size of a pencil. The solid green weft was compromised of acrylic knitting yarn bundled in 4 and 6 strands. I had 14 picks per inch. (The more yarn in the pick, the thicker the tree.) The second weft bundle was a combination of variegated green to brown wool boucle, metallic green glitz, green wool, and a dark green novelty synthetic that was a bit hairy and glisteny. 11 yarns compromised this bundle, and I had between 11-13 pics per inch, so it was thicker than the first.
I am still compiling weft estimates, but I started with about 12 ounces (585 yards) of the variegated wool boucle, and I had 2 1/8 ounces left over. (I need to add the additional yarns to the total weft estimate.)
Take up and shrinkage was minimal. There is no washing. I could also have used fabric instead of yarn.
Additional details: Before begining and ending each tree row, I threw 2 alternating pics of sewing thread to lock down the wefts and keep them from migrating up or down the open areas in the warp. I also used a dab of glue and water at these points to secure the weft before cutting the trees apart.
To cut the trees apart, you cut diagonally from top to bottom, making triangles. The warp group forms the trunk of the tree and the peak of the triangle. If you want to make a garland where all the trees are connected, cut the weft, but not the warp. Fluff out the trees to finish.